def zeros(arr,n):
    count=0
    for i in range(n):
        if arr[i]!=0:
            arr[count]=arr[i]
            count+=1
        
    while count<n:
        arr[count]=0
        count+=1


def print_arr(arr,n):
    for i in range(n):
        print(arr[i],end=" ")


arr=[1,0,0,2,5,0]
zeros(arr,len(arr))
print_arr(arr,len(arr))
